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AIR CONDITIONING
24-33
94
Fig. 43-Valve
Plate-Installed
Position
age extends to the cylinder bores, examine the bores
to see if they can be repaired by removing light scor-
ing, scuffing or scratches with crocus cloth. After con-
ditioning the cylinder bores, clean the surfaces of the
cylinder block, valve plate and head thoroughly with
mineral spirits.
Use care to remove all shreds of old gasket from
the plate, block and head surfaces. Clean the attach-
ing stud holes in the block. If the valve plate or cylin-
der head is damaged, replace, using a complete com-
pressor valve plate replacement package.
lnstallation
(1)
The valve plate and cylinder head must be as-
sembled with the reed valve assembly positioned,
as shown in Figure 43.
(2)
Dip gaskets in clean refrigerant oil. Using pilot
studs as guides, install the valve plate gasket, valve
plate, cylinder head gasket and cylinder head, as
shown in Figure
44.
(3) Install the attaching bolts. Tighten each bolt al-
ternately and evenly
23
to
27
foot-pounds torque.
Piston and Connecting Rod-Removal
(1)
Drain the oil from the compressor.
(2)
Remove the sump attaching bolts.
(3)
Separate the sump from the case by tapping
with a plastic hammer being careful not to distort the
oil pressure relief spring.
(4) Remove the oil relief spring and (rubber) ball
from the crankcase.
( 5 )
Remove the cylinder heads and valve plates.
NOTE: Before removing the pistons, rods or rod
caps, mark all parts to insure reassembly in the
original position.
VALVE PLATE GASKET
LVE PLATE ASSEMBL
61 x 9 5
Fig. 44-/nstalling
Valve Plate and Cylinder Head
(6)
Remove the rod caps; remove the piston and
rod assembly from the cylinder.
Inspection
Inspect the piston and rings for score marks. In-
spect the rod bearing for pits and for chipping. Re-
place parts if damaged.
lnstallation
(1)
Remove the bearing cap and install the piston
in the bore. Use the piston ring compressor to pre-
vent ring damage.
(2)
Install the bearing caps, and tighten screws
52
to
56
inch-pounds torque. Be sure each cap is in-
stalled in its original position.
PILOT STUDS
' --
C-590-
u*?
*
SUM
1
Fig. 4 5 4 n s t a l l i n g Sump
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